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My gun needs to be lighter Need material info

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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My gun needs to be lighter Need material info

Unread postAuthor: archie370 » Mon Oct 15, 2012 7:30 am

Hey guys ive made my functional part of my gun now i need to make it lighter ... any suggestions

i have copper tube for barrel, im thinking stainless and smaller than 1/4 '

i have galvanized steel chamber which holds are, it is to small and to heavy for what i want, also need input...

and fittings what are the strongest and lightest fitting for the job ?


one more question, where can i get high pressure hose for air ... ?
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Unread postAuthor: jackssmirkingrevenge » Mon Oct 15, 2012 7:46 am

Carbon fibre all the way :)

What pressure are you running at? Reinforced soda bottles could be an option... http://www.spudfiles.com/forums/air-tan ... 23098.html
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Unread postAuthor: 8tonsemi » Mon Oct 15, 2012 7:48 am

You can get high pressure hose at McmasterCarr.com
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Unread postAuthor: jackssmirkingrevenge » Mon Oct 15, 2012 7:57 am

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Your gun can be lighter :)
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Unread postAuthor: Goats spudz » Mon Oct 15, 2012 2:35 pm

Aluminium 5754 alloy.
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Unread postAuthor: Zeus » Mon Oct 15, 2012 3:31 pm

Get some muscles, try shooting a 12lb rifle off the shoulder accurately, then you'll stop complaining.

I don't know why my mate needs a bull barrel Tikka in .223 when he doesn't shoot past 250m. And a 6-18x56mm scope is way too big.
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Unread postAuthor: archie370 » Mon Oct 15, 2012 7:36 pm

I'm liking they the aluminum idea... And as for the hose i will look into it thankyou ... Don't post stupid crap
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Unread postAuthor: Zeus » Mon Oct 15, 2012 8:03 pm

Really, how much does it weigh? No estimates, weigh it.
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Unread postAuthor: archie370 » Tue Oct 16, 2012 1:22 am

5kg roughly ... btw i didn't need to because i listed the materials i used and i need more efficient materials in terms of weight ....
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Unread postAuthor: Crna Legija » Tue Oct 16, 2012 3:11 am

make the stock out of Aerogel

what pressure you running it at? under 150psi get high pressure pvc
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Unread postAuthor: archie370 » Tue Oct 16, 2012 4:11 am

Na buddy its all metal ... i dont want to use pvc because i made a spud launcher before and i droped it and it crack all through... so i want to avoid using pvc as much as possible ... may i ask what is aerogel ... (btw im running it at 120psi until i make a fridge compressor to a higher psi level
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Unread postAuthor: archie370 » Tue Oct 16, 2012 4:16 am

ok i looked up aerogel ... alright lets try and be realistic ... where the hell am i going to get that haha ... im just thinking about changing the copper barrel for something that is a little bit stronger and not really heavy .... and also an air supply tank which is sort of light that i can attach to my rifle .
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 16, 2012 4:31 am

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I find it extremely hard to believe that this weighs 5 kg.

Image

The above weighs 5kg empty.

This is perfectly normal weight for a shoulder fired launcher, rather than make it lighter I think you should be focusing on making it more comfortable to hold.
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Unread postAuthor: archie370 » Tue Oct 16, 2012 4:03 pm

Stock ... plastic handle plastic , grip plastic ...

btw my bottom airtank is made out of galvanised steel ... so it is heavy ... heavy fittings ... and where my pilot valve is there are a few fittings that are heavy ... so yeah i would say it is 5 kg
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 16, 2012 4:16 pm

The great thing about making spudguns is that it encourages a scientific approach. Here's something you can try at home, take a plastic bucket and put around 4 and a half litres of water in it, then compare the weight of that to your launcher :)
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